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9. Agreements (Tables)
 12 Months Ended
Dec. 31, 2016
Agreements Tables  
Schedule of working capital agreement activity
    For the year ended December 31,  
    2016     2015  
Ethanol sales   $ 95,556       92,729  
Wet distillers grains sales     22,016       24,556  
Corn oil sales     2,995       3,485  
Corn/milo purchases     91,234       97,179  
Accounts receivable     743       305  
Accounts payable     1,821       1,455